Global Patent Index - EP 2698344 B1

EP 2698344 B1 20160120 - POST-SINTER CONGLUTINATION AND OXIDATION-PREVENTATIVE VANADIUM-NITROGEN ALLOY PREPARATION METHOD

Title (en)

POST-SINTER CONGLUTINATION AND OXIDATION-PREVENTATIVE VANADIUM-NITROGEN ALLOY PREPARATION METHOD

Title (de)

VERFAHREN ZUR HERSTELLUNG EINER VANADIUM-STICKSTOFF-LEGIERUNG ZWECKS VERHINDERUNG DES ZUSAMMENKLEBENS UND DER OXIDIERUNG NACH EINER SINTERUNG

Title (fr)

PROCÉDÉ DE PRÉPARATION D'ALLIAGE DE VANADIUM-AZOTE PRÉVENTIF DE CONGLUTINATION POST-FRITTAGE ET D'OXYDATION

Publication

EP 2698344 B1 20160120 (EN)

Application

EP 12771388 A 20120206

Priority

  • CN 201110090241 A 20110412
  • CN 2012000148 W 20120206

Abstract (en)

[origin: EP2698344A1] Disclosed is a post-sinter conglutination and oxidation-preventative vanadium-nitrogen alloy preparation method, comprising the following steps: (1) mixing a vanadium-containing compound, bonding agent, and pre-mixed carbon reducing agent and compressing the mixture into raw materials balls, and naturally air-drying the raw materials balls containing vanadium-containing compound and the bonding agent; (2) mixing the raw materials balls and granulated carbon reducing agent and continuously feeding the mixture into the vertical kiln of an intermediate frequency induction furnace, and supplying high-purity nitrogen, the material being fed and the product being discharged once every 6 to 8 hours, and the process occurring in three stages: drying, carbonization and nitrogenization, and cooling. The method can reduce production cost and increase production efficiency.

IPC 8 full level

C01B 21/06 (2006.01); B22F 1/02 (2006.01); B22F 9/20 (2006.01); C22C 1/10 (2006.01); C22C 5/02 (2006.01); C22C 5/04 (2006.01); C22C 5/06 (2006.01); C22C 29/16 (2006.01)

CPC (source: EP US)

B22F 1/02 (2013.01 - EP US); B22F 9/20 (2013.01 - EP US); C01B 21/0617 (2013.01 - US); C22C 1/10 (2013.01 - EP US); C22C 5/02 (2013.01 - EP US); C22C 5/04 (2013.01 - EP US); C22C 5/06 (2013.01 - EP US); C22C 29/16 (2013.01 - EP US); B22F 2999/00 (2013.01 - EP US)

C-Set (source: EP US)

B22F 2999/00 + B22F 2999/00 + B22F 9/20 + B22F 9/20 + B22F 2201/02 + B22F 2201/02 + B22F 2201/30 + B22F 2201/30

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2698344 A1 20140219; EP 2698344 A4 20141029; EP 2698344 B1 20160120; AU 2012243313 A1 20131128; AU 2012243313 B2 20150702; AU 2012243313 C1 20151210; CA 2833058 A1 20121018; CA 2833058 C 20160628; CN 102168191 A 20110831; CN 102168191 B 20120704; JP 2014518829 A 20140807; JP 5905569 B2 20160420; US 2014037530 A1 20140206; US 9227847 B2 20160105; WO 2012139409 A1 20121018

DOCDB simple family (application)

EP 12771388 A 20120206; AU 2012243313 A 20120206; CA 2833058 A 20120206; CN 201110090241 A 20110412; CN 2012000148 W 20120206; JP 2014504144 A 20120206; US 201314049242 A 20131009